"Glee" doesn't exactly describe the mood of the hit Fox show's stars right now: Several of the cast members have come down with tonsillitis, causing a delay in production, a rep told the L.A. Times on Friday.

While the "Glee" rep didn't mention which McKinley High students were silenced by sickness, star Dianna Agron, who plays cheerleader Quinn, wrote on her blog the same day of the illness announcement: "Note to self… should have gotten a flu shot. In bed, hoping that medicine, soup, my computer and a marathon of movies will be the cure.”

The 24-year-old actress also included a photo of a teddy bear with a bandaged forehead and a thermometer in its mouth.

"Sorry guys. I had no idea," her father, Billy Ray Cyrus tweeted later that day, reportedly in reference to the footage, according to Entertainment Weekly. "Just saw this stuff for the first time myself. Im so sad. There is much beyond my control right now."

As Marquee previously reported, Billy Ray, 49, announced in October that he and Miley's mom, Tish, were divorcing.